Audio problem: When Judy asks "But Grandpa, why didn't you tell us what was going on?" towards the end of the episode, she is speaking with Jane's voice.
The Jetsons (1962)
Episode list - season 1
Starring: Mel Blanc, Daws Butler, Janet Waldo, George O'Hanlon, Penny Singleton
More mistakes in The Jetsons
Cogswell: There's only one thing worse than war and that is business, and Spacely has declared business on us.